共 7 条
[1]
BLOUNT WP, 1951, HEN BATTERIES
[2]
GOULDEN CH, 1952, METHODS STATISTICAL
[4]
Gutteridge H. S., 1944, SCI AGRIC [OTTAWA], V24, P240
[5]
GUTTERIDGE H. S., 1942, SCI AGRIC [OTTAWA], V22, P482
[6]
HARTMAN RC, 1951, KEEPING CHICKENS CAG
[7]
SNEDECOR GW, 1946, STATISTICAL METHODS